Wall construction



Aug. 9, 1932. F. MCM. sAwYER WALL CONSTRUCTION Filed Jan. 3. 1930 Patented Aug. 9, 1932 UNITED STATES Nrari* FRANK MCM. SAWYER, F RICHMOND, VIRGINIA 'WALL CONSTRUCTION Application filed January 3, 1930. vSerial No. 418,221.

This invention relates to improvements in wall constructions, and more particularly to the type known as the double wall construction which consists of inner and outer tiers .E of slabs spaced apart to form insulating spacts therebetween. One of the particular objects of the invention is to form a wall of pre-cast concrete slabs of the type that can be cast or molded in a plural mold. A further object is to provide a wall slab of comparative lightness and having means for receiving a binder around its edges to maintain its position in the wall without danger of slipping or sliding to form an uneven outer surface. Y

a wall showing the invention.

Fig. 2 is a horizontal cross-section taken on the line 2-2 of Fig. 1.

Fig. 3 is a vertical cross-section taken on the line 3--3 of Fig. 1.

Fig. 4 is a perspective view of one of the slabs looking at its rear side; and,

Fig. 5 is a detail view in elevation of one of the intersection joints.

Similar reference numerals in all of the 3 figures of the drawing designate like parts.

Referring to Fig. 1, A designates the outer tier and B the inner tier of a double wall construction, each of said tiers being formed with a plurality of pre-cast concrete slabs 5 arranged in horizontal and vertical rows in a manner that the joint lines between the slabs are continuous both vertically and horizontally from the bottom to the top edge of the tiers and for the entire length ofthe wall 10 horizontally.

Each slab is formed with a plate portion having round its periphery a projecting flange 6 on one side extending at right angles to the face of the plate portion, thereby pro- 5 viding a fiat face on the front of the slab.

It will be observed from inspection -of Fig. 2,

that the outside abutting ed-ges 8 are narrower :and longerthan the inside abutting edges 9, so that in the finished wall, the outside ab'utting edges 8 of adjacent slabs will lie .closer together and forma narrower joint on. the front side ofthe wall, which will .dam the flow of mortar Ior cement and `.require lless' time and labor to finish. v'The inside abutting edges 9 being spaced farther apart `than is the abutting edges 9, form l at the intersections ofthe blocks, spaces sufiiciently large to permit the insertion of the ends vof the tie-rods 10, (see Fig. 5),

-thesejrods l() being preferably greater in diameterV than is the horizontal and ver- .tical reinforcing rods 1l and l2, respectively.

Thus, the slabs ,are formed to provide entering spaces for the ends of the tie-rods at the intersecting joints between the slabs, and

thereby avoiding the necessity of casting spe-fifi cially formed recesses in the slabs or break ing olf the corners to receive the ends of the tie-rods when :the slabs are assembled.

Tn forming the slabs with. flanges and thereby recessing the rear sides, avery light weight and -strong slab is provided, the flanges being considerably widerth-an the plate portion, forms substantial self supporting edges for the slabs while. inthe process of erecting. Y Y

Edges 8 and 9 have been described herein, abutting edges, which is meant to imply that they lie opposite to edges of adjacent slabs and would abut, if the-cement was omitted.

Reinforcing rods 1l and 12 are positioned within the hollow spaces between the slabs formed by the grooves 7 and are vpreferably continuous throughout the wall. They cross each other and the ends of the tie-rods at each intersection of the joints between the slabs, thereby forming a substantial and. rigid structure wherein every slab is tied in its place by the reinforcing means.

In the operation of assembling the slabs in a wall, a horizontal course of slabs are@- first positioned and the vertical joints between the slabs are filled with grout substantiallyV up to the bottom of the horizontal grooves in the top sides of the flanges, then the tie-rods and horizontal reinforcing rods are positioned and the upper horizontal grooves are preferably plastered, similar to the method of lay rows of bricks, that is, overlilled with plaster or cement, and then the slabs of the next horizontal row are placed and pressed in position over the surplus plaster which will maintain the position of the slabs until the vertical joints are filled, it being understood that the vertical reinforcing rods are fixed in the bottom row of slabs and extend upwardly throughout the height of the wall, thus they are always in position after the irst or bottom row'of slabs are erected.

In my copending application, Serial No.V 869,843, is shown a building slab having three of its edges provided with rearwardly eX- tending anges and while its bottom edge (the edge without a iange,) is provided with a groove, this groove is provided-to receive a tongue on the adjacent block or slab and not constructed to form a mortar joint. Furthermore, the groove is formed in slab facaportion.

Having thus fully described the invention,

what is claimedis: v

A wall construction formed with a plurality of pre-cast concrete slabs arranged in vertical and horizontal rows forming con'- tinuous vertical and horizontal joints between the slabs, said joints crossing each other, each of Jdie slabs being formed entirely around its periphery with rearwardly extending flanges which are coextensive in width, theouter sides of said flanges being grooved to :form horizontal and vertical cement holding spaces in the completed wall and abutting edges of unequal width, horizontal and vertical reenorcing rods between the grooves in adjacent slabs and crossing each other at the intersections of the joints and cement lilling in the grooves.

In testimony whereof I hereunto ailix my signature. Y

FRANK MolVI.` SAVVYER,v 

